轴力作用下局部加厚T型管节点抗冲击性能试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (15) : 121-126.

论文

崔安稳，曲慧，丛静岚

作者信息 +

Tests for anti-impact performance of locally thickened T-shaped tubular joints under axial force

CUI Anwen,QU Hui,CONG Jinglan

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摘要

试验完成了1个未加厚和3个局部加厚的T型管节点的抗冲击性能研究。试验过程中考虑了局部加厚区的加厚壁厚Tc和加厚区的长度Lc对局部加厚T型管节点抗冲击性能的影响。试验结果表明：试件局部加厚可以提高节点域截面抗弯刚度，减小局部凹陷变形，使塑性绞线外移；提高节点受冲击初始阶段耗能能力和荷载-位移曲线平台段的耗能比例，避免节点域吸收大量能量，提高节点抗冲击能力，有效地保护了节点。研究结果为进一步探索局部加厚节点动态抗冲击承载力提供了参考。

Abstract

Tests for anti-impact performances of one unthickened T-shaped tubular joint and three ones locally thickened were conducted to study effects of thickened wall thickness Tc and thickened zone length Lc on anti-impact performance of locally thickened T-shaped tubular joints.Test results showed that specimens’ local thickening can raise bending stiffness of joint cross-section, reduce local dent deformation, and make plastic hinge line move up; meanwhile, it can improve joints’ energy-dissipating ability in the initial stage of impact and the energy-dissipating proportion of load-displacement curve’s platform segment to avoid joint zone absorbing much energy, raise joint’s anti-impact ability, and effectively protect it; the results can provide a reference for further exploring the dynamic anti-impact ability of locally thickened joints.

导出引用

崔安稳，曲慧，丛静岚. 轴力作用下局部加厚T型管节点抗冲击性能试验研究[J]. 振动与冲击, 2019, 38(15): 121-126

CUI Anwen,QU Hui,CONG Jinglan. Tests for anti-impact performance of locally thickened T-shaped tubular joints under axial force[J]. Journal of Vibration and Shock, 2019, 38(15): 121-126

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